Topics - ShermsUMD

I need some advice... I'm going to be a 1L this fall. I just found someone who's willing to sell me 40 used commercial outlines for less than the cost of one new commercial outline! They cover her whole legal education - 1L courses and on.

The kicker: They're about 8-10 years old.

Would it be harmful for me to trust such outdated books? Do outlines tend to change much from decade to decade? Should I take this bargain and weed out the few good outlines, or use the $ for one new outline instead?